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Adjustable Gain
Avalanche Photodetectors

APD410x
Operation Manual

2020

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Summary of Contents for APD410 Series

Page 1: ...Adjustable Gain Avalanche Photodetectors APD410x Operation Manual 2020 ...

Page 2: ...Version Date Item No 1 4 18 Feb 2020 M0009 510 951 Copyright 2020 Thorlabs ...

Page 3: ...ndations 4 Maintenance and Service 11 5 Appendix 12 12 5 1 Technical Data 13 5 2 Typical Detector Responsivity Curves 15 5 3 Typical Output Frequency Response 17 5 4 Typical Spectral Noise 19 5 5 Drawings 22 5 6 Fiber Coupling onto Small Detector Area 23 5 7 Certifications and Compliances 24 5 8 Manufacturer Address 24 5 9 Return of Devices 25 5 10 Warranty 25 5 11 Copyright and Exclusion of Liabi...

Page 4: ...d our international partners are looking forward to hearing from you Thorlabs GmbH Warning Sections marked by this symbol explain dangers that might result in personal injury or death Always read the associated information carefully before performing the indicated procedure Please read this advice carefully This manual also contains NOTES and HINTS written in this form Attention Paragraphs precede...

Page 5: ...he included external power supply LDS12B 12 VDC 250 mA via a PICO M8 power connector The appropriate input voltage 100 VAC 120 VAC 230 VAC can be selected with a switch on the power supply 1 1 Safety Attention The safety of any system incorporating the equipment is the responsibility of the assem bler of the system All statements regarding safety of operation and technical data in this instruction...

Page 6: ... Adjustable Gain Avalanche Photodetector Silicon APD 400 1000 nm 8 32 mounting holes APD410A M Temperature Compensated Adjustable Gain Avalanche Photodetector Silicon APD 400 1000 nm M4 mounting holes APD410C Temperature Compensated Adjustable Gain Avalanche Photodetector InGaAs APD 900 1700 nm 8 32 mounting holes APD410C M Temperature Compensated Adjustable Gain Avalanche Photodetector InGaAs APD...

Page 7: ...e Note If you want to use your own power supply you can ask Thorlabs for an appropriate power con nector cable Carefully unpack the unit and accessories If any damage is noticed do not use the unit Call Thorlabs and have us replace the defective unit If necessary mount the unit on your optical table or application The unit has three tapped mounting holes see section Mounting for details Remove the...

Page 8: ...e in general with lower temperatures the M factor will increase with higher temperatures decrease The APD410x series Avalanche Photodetectors are temperature compensated A thermistor senses the temperature inside the APD410x enclosure and a special electronic circuit controls the applied to the APD reverse voltage in accordance with the temperature change As the M multiplication factor depends on ...

Page 9: ...er an OUTPUT voltage which is a function of incident light power Popt detector s responsivity ÂM l at a given wavelength and M factor see Typical Detector Responsivity Curves and transimpedance gain G ÂM l for a given wavelength can be read from the spectral responsivity curves see Tech nical Data to estimate the OUTPUT voltage The M factor gain settings range is 10 to 100 APD410A 5 to 50 APD410A2...

Page 10: ... filters apertures or fiber adapters as well as providing an easy mounting mechanism using the Thorlabs cage assembly accessories The electrical connectors the optical gain adjustment knob and the ON OFF switch are conveniently located on the side walls of the housing for easy access and to minimize the thickness of the Avalanche Photodetector so it can fit into tight spaces For maximum flexibilit...

Page 11: ... level in critical cases The Gain adjustment can be used for setting the output voltage to an appropriate value Note APDs generate noise due to the multiplication process so excess noise increases as the gain is increased Similarly the photocurrent generated by signal light is also amplified by the gain These facts mean that the best S N exists at a certain gain 1 Turn the power switch to O when y...

Page 12: ...detector input away from the noise source Different common ground points can also be tested The amplifier offset voltage is factory set to zero at 23 C ambient temperature Due to the very high transimpedance gain even small temperature changes may affect offset voltage Therefore it is recommended to use the Avalanche Photodetector in a constant temperature environment after a short warm up period ...

Page 13: ...istant Attention To avoid damage to the instrument do not expose it to spray liquids or solvents The unit does not need a regular maintenance by the user It does not contain any modules and or components that could be repaired by the user himself If a malfunction occurs please contact Thorlabs for return instructions Do not remove covers High voltage ...

Page 14: ...W 800 nm M 100 1 5 µW 800 nm M 10 0 32 µW 600 nm M 50 3 2 µW 600 nm M 5 0 45 µW 1550 nm M 20 2 25 µW 1550 nm M 4 Maximum Input Power Photodiode Damage Threshold 1 mW M Factor Adjustment Range 10 to 100 5 to 50 4 to 20 Minimum NEP DC 10 MHz Integrated Noise DC 10 MHz 0 13 nW RMS 0 28 nW RMS 0 38 nW RMS Electrical Output Impedance BNC 50 W Maximum Output Voltage 4 1 V High Z load 2 0 V 50 W DC Offse...

Page 15: ... 2020 Thorlabs 5 Appendix 13 5 2 Typical Detector Responsivity Curves Typical Detector Responsivity APD410A M 100 Typical Detector Responsivity APD410A2 M 50 ...

Page 16: ... 2020 Thorlabs 14 APD410x Typical Detector Responsivity APD410C M 20 ...

Page 17: ...is measurement a test signal generated by an optical transmitter was fiber coupled to the Avalanche Photodetector The OUTPUT frequency response was measured using a optical network analyzer Typical Output Frequency Response APD410A Typical Output Frequency Response APD410A2 ...

Page 18: ... 2020 Thorlabs 16 APD410x Typical Output Frequency Response APD410C ...

Page 19: ...ectrum analyzer resolution bandwidth 10 kHz video bandwidth 10 kHz The optical input of the detector was blocked The black curve Reference was measured with the same setup and the detector switched off i e it represents the measurement system s noise floor Typical Spectral Noise APD410A Typical Spectral Noise APD410A2 ...

Page 20: ... 2020 Thorlabs 18 APD410x Typical Spectral Noise APD410C ...

Page 21: ... 2020 Thorlabs 5 Appendix 19 5 5 Drawings Distance between the surface of the active detector area and the front of the flange Distance A Type A2 Type C Type a 2 2 0 3 mm 2 2 0 3 mm 2 1 0 3 mm ...

Page 22: ... 2020 Thorlabs 20 APD410x Dimensions APD410X Series Imperial ...

Page 23: ... 2020 Thorlabs 5 Appendix 21 Dimensions APD410X M Series Metric ...

Page 24: ...nd a focusing lens Below is a possible ar rangement The assembly in front of the APD410x comprises of a fiber collimator dependent on fiber a lens tube collimator adapter AD11F or AD12F dependent on collimator a SM1L1 lens tube with aspheric lens inside not visible above and a LM1XY X Y translation mount The beam out of the fiber is collimated transferred into a nearly parallel beam and afterwards...

Page 25: ... 2020 Thorlabs 5 Appendix 23 5 7 Certifications and Compliances ...

Page 26: ...rlabs GmbH Münchner Weg 1 D 85232 Bergkirchen Germany Tel 49 8131 5956 0 Fax 49 8131 5956 99 www thorlabs de Email europe thorlabs com 5 9 Return of Devices This precision device is only serviceable if returned and properly packed into the complete ori ginal packaging including the complete shipment plus the cardboard insert that holds the en closed devices If necessary ask for replacement packagi...

Page 27: ...l or the technical data of the de scribed unit at any time 5 11 Copyright and Exclusion of Liability Thorlabs has taken every possible care in preparing this document We however assume no li ability for the content completeness or quality of the information contained therein The content of this document is regularly updated and adapted to reflect the current status of the hardware and or software ...

Page 28: ...onyms AC Alternating Current APD Avalanche Photo Diode CW Continuous Wave DC Direct Current LED Light Emitting Diode NEP Noise Equivalent Power RF Radio Frequencies Si Silicon SNR Signal to Noise Ratio UV Ultraviolet References 1 Hamamatsu Technical Information SD 28 ...

Page 29: ...s thorlabs com Thorlabs End of Life Policy WEEE Thorlabs verifies our compliance with the WEEE Waste Electrical and Electronic Equip ment directive of the European Community and the corresponding national laws Ac cordingly all end users in the EC may return end of life Annex I category electrical and electronic equipment sold after August 13 2005 to Thorlabs without incurring disposal charges Elig...

Page 30: ...www thorlabs com ...

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